Vagxaro



(No Model.)

H. ANDERSON 82; H. ELIAS.

FILE COVERING.

Patented Jan. 8, I889.

serving and protecting the wood.

f 'UNITED STATES FFICEo HENRY ANDERSON, Oh OAKLAND, AND ill-'Gll ELIAS,OF SAN FRANCISCO, (.ALIFORNIA, ASSIGNORS OF PART TO ROBERT \V. KING,FRANK CA VAGNARO, J OHN GAMBETTA, M"ARINO MONACO, JAMES A. ORR, BENJA-MIN F. KOIILBERG, HERMANO. IIAAS, ROBERT E. MURRAY, A. REILLY,

AND JAMES ML MCCARTY.

FILE-COVERING.

SPECIFICATION forming part of Letters Patent No. 395,866, dated January8, 1889. Application filed'llpril 2, 1888. Serial No. 269,352. Nomodel.)

To aIZZ whom it may concern:

Be it known that we, HENRY ANbichsoN, of Oakland, Alameda county, andllUGll ELIAS, of the city and county of San lrrancisco, State ofCalifornia, have invcntcdun Improvement in Pile-Covering; and we herebydeclare the following to be a t'ull,cleur, and exact description of thesame.

The object of our invcnlion is to provide a suitable. meanst'orlhoprolection of piles from the ravages of the tcrcdo and thelimnoria and other marine insects.

It; consists of a certain preparation and covering for that portion ofthe pile extending from the mud orboltom to a poin'tat or abovehigh-water mark, which will be more fully described by reference to theaccompanying drawings, in which Figure '1 showsapile with thcmvcringupon it.- outer protecting-case made in two parts. Fig. 3 shows thiscasing made in onc part.

In order to prepare the piles, having lirst ascertained the depth towhich they are to be driven and the depth of the water in which theywill stand, the piles A are placed in a suitable lathe or nmohine; inwhich the bark and outer surface of the pile are turned off to a smalldepth, and so as to produce a smooth and regular surface over thatportion which will'extend frointhe mud to the high-water mark. Thisturned portion of the pile is then coated with a preparation of resin,coal-tar, pitch, asphaltum, orotzher like or suitable material orcombination of materials, 13, for pre- This substance is put on boilinghot, and after its application this portion of the pile is wrapped witha suitable flexible fibrous eovering-- which may be either cotton cloth,canvas,

C \vhich is wrapped closely around the part which has already beentreated as above described. This being done, a second coating ofthe-preparation first named is put on over the fibrous wrapping materialand allowed to harden. In order to protect this'coating from Fig. Bis :1transverse scction showingthe r exterior abrasion and wear a sheet orsheets of galvanized iron, steel, copper, or other metal, E, are bentinto a vlindrical or semievlimlrimrl l'orm oi sullicient length anddiameter to inclose the port ion of. the pile which has been treated asabove describm'l. When made in two parts, which is usuallythe mostconvenient, each of the halves is bentto fit one-hall of thecircumt'crence of the pile, and is provided with outwardly-projeetingflanges I), having holes bored orpunchedthrough the flanges. 'lheseholes maybe from four to ten inches apart -und large enough to receivebolts or rivets, which may be secured either b nut-s or by rivetin as isfound mostdcsirnble.

'hen the metallic covering does not ex- 'I :ictly fit the intcrior pile,so that there are spaces lel't between the flanges, these spaces will befilled with packing of fibrous material saturated with the pitch orasphultunl prepaoakun1,jutc, Manila cloth, or other material,

ration, thus l'orniing a compact and impene-v. l

trable coverin :it all Joints.

The sheets of metal used may be of anyde- 4 sired thickncsslromone-twentieth to one hull. ol'nn inch. In some casesit: maybe foundpreferable to make the inclosing-shect of a single piece, which will becylindrical in form, having flanges only on one side. In order toprevent these inelosing metallic cylinders or casings from slipping downfrom their places holes are punched or bored through them and throughthcbody of the pile, into which bolts or spikes may be placed to holdthe covering in place and prevent displacen'ient from the concussion ofthe pile-driver.

By turning the piles, which are more orless tapering, that portion whichis to be treated is made smooth throughout its length, and the outermetallic using is thus easily fitted and drawn together by the bolts orrivets, so to close tightly at the bottom and top, and thus prevent anyaccess of the insects to the part usually exposed to their ravages.

Having thus described our invention, what we claim as new, and desire tosecure by Let'- ters Patent, is

1. The improvement in pile-covering, consisting of the pile turned to asmooth surface between the points which are to be protected, a coatingconsisting o apreparation of pitch or asphaltum, followed by a fibrousWrapping, and at second coating of the material, and a final inclosureor covering of metal, substmitially as herein described.

2. The pile having the surface to be protected turn'ed'smooth, a coatingof protecting material spread over this surface, a wrapping I of clothor fibrous material outside of the coating, and a linel coating ofmaterial outside of the wra 'iping, in combination with :1. flanged(j'ylindrica-l metallic casehzwing bolts or rivet holes in the flanges,and a hole or holes, by which it is secured directly to the pile,substantially as herein described.

3. A pile-protector consisting of the exterior cylindrical metal casinghaving the flanges with bolt or rivet holes, by which it is drawntogether about the pile, in combination with a packing or filling forthe joints, substantiztlly as herein described.

In witness whereof we have hereunto set our hands.

HENRY ANDERSON. HUGH ELIAS.

\Yitnesses:

:4. ll. NOURSE, II. (1. LEE.

